公开(公告)号：US5965777A

公开(公告)日：1999-10-12

申请号：US739455

申请日：1996-10-29

Applicant: George Gauthier

Inventor： George Gauthier

IPC: C07C45/00 ,  C07C45/62 ,  C07C45/67 ,  C07C49/743 ,  C07C61/00 ,  C12C3/00 ,  C12C3/10

CPC classification number: C12C3/08 ,  C12C3/10 ,  C12C3/12 ,  C12C9/025

Abstract: A process for the removal of catalyst poisons from hops and hop extracts is disclosed. After processing the hops to extract the alpha or beta acids therein, the alpha or beta acids are treated with activated nickel catalyst. The activated nickel catalyst binds the catalyst poisons which are believed to be sulfur containing compounds. The activated nickel and catalyst poisons are separated from the alpha or beta acids, and the alpha or beta acids are then hydrogenated and isomerized into tetrahydroisoalpha acids.

Abstract translation: 公开了从啤酒花和啤酒花提取物中除去催化剂毒物的方法。 在处理啤酒花提取其中的α或β酸之后，用活化的镍催化剂处理α或β酸。 活化的镍催化剂结合被认为是含硫化合物的催化剂毒物。 活化的镍和催化剂毒物与α或β酸分离，然后将α或β酸氢化并异构化成四氢异α酸。

公开(公告)号：US06198004B1

公开(公告)日：2001-03-06

申请号：US09329299

申请日：1999-06-10

Applicant: John Paul Maye ,  Jianping Xu ,  George Gauthier ,  Scott W. Weis

Inventor： John Paul Maye ,  Jianping Xu ,  George Gauthier ,  Scott W. Weis

IPC: C07C4567

CPC classification number: C12C5/026 ,  C12C3/08 ,  C12C3/12 ,  C12C9/025

Abstract: The invention relates to a process for converting alpha acid and isoalpha acids to tetrahydroisoalpha acid. The process comprises isomerizing an alpha acid to produce isoalpha acid and hydrogenating the isoalpha acid in the presence of a noble metal catalyst wherein, the noble metal catalyst is added incrementally or continuously throughout the hydrogenation step. The invention also relates to tetrahydroisoalpha acids made by the above process.

Abstract translation: 本发明涉及将α-酸和异α-酸转化为四氢异α酸的方法。 该方法包括异构化α酸以产生异α酸并在贵金属催化剂存在下氢化异α酸，其中贵金属催化剂在整个氢化步骤中逐渐或连续地加入。 本发明还涉及通过上述方法制备的四氢异构酸。